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( Nose)
Anatomically, a nose is a protuberance in vertebrates that houses the nostrils, or nares, which admit and expel air for respiration in conjunction with the mouth. and behind the nose is the olfactory mucosa and the sinuses. Behind the nasal cavity, air next passes through the pharynx, shared with the digestive system, and then into the rest of the respiratory system. In humans, the nose is located centrally on the face; on most other mammals, it is on the upper tip of the snout. As an interface between the body and the external world, the nose and associated structures frequently perform additional functions concerned with conditioning entering air (for instance, by warming and/or humidifying it, also for flicking if moving and by mostly reclaiming moisture from the air before it is exhaled (as occurs most efficiently in camels). In most mammals, the nose is the primary large organ for smelling. As the animal sniffs, the air flows through the nose and over structures called turbinates in the nasal cavity. The turbulence caused by this disruption slows the air and directs it toward the olfactory epithelium. At the surface of the olfactory epithelium, odor molecules carried by the air contact olfactory receptor neurons which transduce the features of the molecule into non painful electrical impulses in the brain. The nose hairs are able to stop unwanted particles from entering the lungs. In cetaceans, the nose has been reduced to the nostrils, which have migrated to the top of the head, producing a more streamlined body shape and the ability to breathe while mostly submerged. Conversely, the elephant's nose has elaborated into a long, muscular, manipulative organ called the trunk.
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Nose Subcategories
Nose Articles
Implants for missing facial organs (EAR, NOSE, EYES) by Dr.Biju Thomas
INDICATIONS To achieve success with an implant retained craniofacial prosthesis, the surgeon must be familiar with the indications and surgical technique which, although not technically...
Implants for missing facial organs (EAR, NOSE, EYES) - Historical background by Dr.Biju Thomas
Over the last decade, there has been a very rapid development in technical possibilities to provide patients with facial prostheses retained by skin penetrating implants after ablative tumor surgery. The use of The Right Solution to Your Acne Problems by Melanie Hudson
Most people are annoyed and aggravated at the sight of acne on their faces. Pimple spots and blemishes are the last thing that teenagers would want to have especially because they are trying their best to look presentable for their friends. Are you o...
If You've Just Been Diagnosed With Type 2 Diabetes These Three Tips Can Help You Get Your Health Ba by Robert Tracy
According to the Center for Disease Control, 50% of all Type 2 diabetes diagnosis occur among those born before 1958. This article provides healthy tips for the overweight and over 50 crowd most likely to suffer from this debilitating disease. ...
Choosing Your New Nose by Patricia Woloch
Rhinoplasty, more commonly known as a ‘nose job’, is one of the most popular cosmetic procedures. Although rhinoplasty is usually done for cosmetic reasons, it can also correct structural defects...
Can your Snoring Be Treated with Dental Devices? by Rene Moller
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